package com.sky.service.admin.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.enumeration.OperationType;
import com.sky.exception.*;
import com.sky.mapper.admin.EmployeeMapper;
import com.sky.pojo.Employee;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.admin.EmployeeService;
import com.sky.utils.JwtUtil;
import com.sky.vo.EmployeeLoginVO;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import javax.annotation.Resource;
import java.beans.beancontext.BeanContext;
import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;


@Service
public class EmployeeServiceImpl  implements EmployeeService {

    private static final Logger log = LoggerFactory.getLogger(EmployeeServiceImpl.class);
    @Resource
    private EmployeeMapper employeeMapper;
    @Resource
    private JwtProperties jwtProperties;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Result<EmployeeLoginVO> login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();



        //1、根据用户名查询数据库中的数据  select * from employee where username = #{username}
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //MD5 密码加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //密码比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (StatusConstant.DISABLE.equals(employee.getStatus())) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //登录成功后，生成jwt令牌
        Map<String, Object> claims = new HashMap<>();
        claims.put(JwtClaimsConstant.EMP_ID, employee.getId());
        String token = JwtUtil.createJWT(
                jwtProperties.getAdminSecretKey(),
                jwtProperties.getAdminTtl(),
                claims);
        EmployeeLoginVO employeeLoginVO = EmployeeLoginVO.builder()
                .id(employee.getId())
                .userName(employee.getUsername())
                .name(employee.getName())
                .token(token)
                .build();
        return Result.success(employeeLoginVO);
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public Result insertEmploy(EmployeeDTO dto) {
        // 避免账户存在
        Employee byUsername = employeeMapper.getByUsername(dto.getUsername());
        if(Objects.nonNull(byUsername)){
            throw new EmployeeNameExistException(byUsername.getUsername()+"用户名已经存在");
        }

        Employee employee = new Employee();
        BeanUtils.copyProperties(dto,employee);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employeeMapper.insertEmploy(employee);

        return Result.success();
    }

    @Override
    public Result<PageResult> selectPage(EmployeePageQueryDTO dto) {
        int page = dto.getPage();
        int pageSize = dto.getPageSize();
        if (page<=0||pageSize<=0){
            throw new BaseException("参数非法");
        }
        PageHelper.startPage(page,pageSize);

        Page<Employee> employees = employeeMapper.selectPage(dto.getName());
        PageResult build = PageResult.builder().records(employees.getResult())
                .total(employees.getTotal())
                .build();
        return Result.success(build);
    }

    @Override
    public Employee selectId(Integer id) {
        if (Objects.isNull(id)){
            throw new RuntimeException("id为不存在");
        }
        Employee employee = employeeMapper.selectId(id);
        return employee;
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public int reviseInformation(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        int i = employeeMapper.reviseInformation(employee);
        log.info("修改的信息:{}",i);
        return i;
    }

    @Override
    public int reviseStatus(Integer status, Long id) {
        Employee build = Employee.builder()
                .id(id).status(status).build();

        return employeeMapper.updateStatus(build);
    }

    @Override
    public int revisePassword(PasswordEditDTO passwordEditDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(passwordEditDTO,employee);
        employee.setId(BaseContext.getCurrentId());
        employee.setUpdateTime(LocalDateTime.now());
        String password = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
        employee.setPassword(password);
        int i = employeeMapper.updatePassword(employee);
        log.info("修改的密码信息:{}",i);
        return i;
    }


}
